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Date: Mon, 6 Feb 2012 10:35:02 -0500
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From: Ryan Stone <rysto32@gmail.com>
To: Ivan Voras <ivoras@freebsd.org>
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Cc: svn-src-head@freebsd.org, Ryan Stone <rstone@freebsd.org>,
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Subject: Re: svn commit: r230984 - head/sys/kern
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On Mon, Feb 6, 2012 at 6:34 AM, Ivan Voras <ivoras@freebsd.org> wrote:
> Shouldn't new threads inherit affinity from the threads which spawned them?

Kernel threads were not inheriting affinity from the thread that
spawned them.  They were inheriting affinity from an arbitrary sibling
thread in the same kernel process.  For example, if you set
net.isr.bindthreads=1, all threads in the intr process that don't set
affinity(which is most of them) would end up bound to CPU 0, including
every single softclock thread.